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Regulation Mechanism of the Lateral Diffusion of Band 3 in Erythrocyte Membranes by the Membrane Skeleton Michio Tomishige, Yasushi Sako, and Akihiro Kusumi.

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Presentation on theme: "Regulation Mechanism of the Lateral Diffusion of Band 3 in Erythrocyte Membranes by the Membrane Skeleton Michio Tomishige, Yasushi Sako, and Akihiro Kusumi."— Presentation transcript:

1 Regulation Mechanism of the Lateral Diffusion of Band 3 in Erythrocyte Membranes by the Membrane Skeleton Michio Tomishige, Yasushi Sako, and Akihiro Kusumi J. Cell Biol. Volume 142(4):989-1000 August 2, 1998

2 (a) A model of the compartmentalized structure of the plasma membrane with regard to translational diffusion of band 3 Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

3 (a and b) Representative trajectories of band 3 in the erythrocyte membrane with a temporal resolution of 33 ms for 10 s Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

4 Typical trajectories of band 3 that is (or is not) undergoing macroscopic diffusion, spectrin, and Fl-PE (artificially incorporated lipid) in erythrocyte membranes with time resolutions of 33 and 0.22 ms (total observation times of 6.7 s and 67 ms), respectively Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

5 (a and b) Representative trajectories of gold particles attached to band 3 that does not exhibit macroscopic diffusion (a) and spectrin (b) when they were dragged using optical tweezers at a velocity of 0.6 μm/s (maximum trapping force of 0.25 pN) Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

6 Representative trajectories of band 3 in the erythrocyte membrane observed using a high-speed video system Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

7 (a and b) Typical plots of MSD against the time interval for a particle–band 3 complex Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

8 Distributions of the microscopic diffusion coefficient Dmicro (a), the macroscopic diffusion coefficient DMACRO (b), and the size of the confinement domain L (c) Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

9 Movements of band 3 during deformation of the membrane skeleton Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000

10 Examination of the viscous drag induced by the membrane skeleton dragging Tomishige M. et.al. J. Cell Biol. 1998:142:989-1000


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